80486DX2-66/86Box-fork
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Some Flash fixes for the Acrosser AR-B1479.

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This commit is contained in:
OBattler
2021-08-10 15:37:15 +02:00
parent f0e84f7f13
commit 03d91af98c
3 changed files with 100 additions and 32 deletions
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1
src/include/86box/flash.h
View File

@@ -22,6 +22,7 @@ extern const device_t intel_flash_bxb_device;
extern const device_t sst_flash_29ee010_device;
extern const device_t sst_flash_29ee020_device;
extern const device_t winbond_flash_w29c020_device;
extern const device_t sst_flash_39sf010_device;
extern const device_t sst_flash_39sf020_device;
extern const device_t sst_flash_39sf040_device;

6
src/machine/m_at_386dx_486.c
View File

@@ -97,7 +97,7 @@ machine_at_sis401_common_init(const machine_t *model)
device_add(&keyboard_at_ami_device);
if (fdc_type == FDC_INTERNAL)
device_add(&fdc_at_device);
device_add(&fdc_at_device);
}
@@ -227,7 +227,7 @@ machine_at_spc6000a_init(const machine_t *model)
device_add(&cs8230_device);
if (fdc_type == FDC_INTERNAL)
device_add(&fdc_at_device);
device_add(&fdc_at_device);
device_add(&keyboard_at_samsung_device);
@@ -1310,7 +1310,7 @@ machine_at_arb1479_init(const machine_t *model)
device_add(&w83977f_device);
device_add(&keyboard_ps2_ami_pci_device);
device_add(&stpc_consumer2_device);
device_add(&sst_flash_29ee020_device);
device_add(&sst_flash_39sf020_device);
return ret;
}

125
src/mem/sst_flash.c
View File

@@ -35,7 +35,8 @@
typedef struct sst_t
{
uint8_t id, is_39, page_bytes, sdp;
uint8_t manufacturer, id, has_bbp, is_39,
page_bytes, sdp, bbp_first_8k, bbp_last_8k;
int command_state, id_mode,
dirty;
@@ -60,6 +61,7 @@ static char flash_path[1024];
#define SST_CHIP_ERASE 0x10 /* Both 29 and 39, 6th cycle */
#define SST_SDP_DISABLE 0x20 /* Only 29, Software data protect disable and write - treat as write */
#define SST_SECTOR_ERASE 0x30 /* Only 39, 6th cycle */
#define W_BOOT_BLOCK_PROT 0x40 /* Only W29C020 */
#define SST_SET_ID_MODE_ALT 0x60 /* Only 29, 6th cycle */
#define SST_ERASE 0x80 /* Both 29 and 39 */
/* With data 60h on 6th cycle, it's alt. ID */
@@ -68,21 +70,36 @@ static char flash_path[1024];
#define SST_CLEAR_ID_MODE 0xf0 /* Both 29 and 39 */
/* 1st cycle variant only on 39 */
#define SST_ID_MANUFACTURER 0xbf /* SST Manufacturer's ID */
#define SST_ID_SST29EE010 0x07
#define SST_ID_SST29LE_VE010 0x08
#define SST_ID_SST29EE020 0x10
#define SST_ID_SST29LE_VE020 0x12
#define SST_ID_SST39SF512 0xb4
#define SST_ID_SST39SF010 0xb5
#define SST_ID_SST39SF020 0xb6
#define SST_ID_SST39SF040 0xb7
#define SST 0xbf /* SST Manufacturer's ID */
#define SST29EE010 0x0700
#define SST29LE_VE010 0x0800
#define SST29EE020 0x1000
#define SST29LE_VE020 0x1200
#define SST39SF512 0xb400
#define SST39SF010 0xb500
#define SST39SF020 0xb600
#define SST39SF040 0xb700
#define WINBOND 0xda /* Winbond Manufacturer's ID */
#define W29C020 0x4500
#define SIZE_512K 0x010000
#define SIZE_1M 0x020000
#define SIZE_2M 0x040000
#define SIZE_4M 0x080000
static void
sst_sector_erase(sst_t *dev, uint32_t addr)
{
memset(&dev->array[addr & (dev->mask & ~0xfff)], 0xff, 4096);
uint32_t base = addr & (dev->mask & ~0xfff);
if ((base < 0x2000) && (dev->bbp_first_8k & 0x01))
return;
else if ((base >= (dev->size - 0x2000)) && (dev->bbp_last_8k & 0x01))
return;
memset(&dev->array[base], 0xff, 4096);
dev->dirty = 1;
}
@@ -90,9 +107,19 @@ sst_sector_erase(sst_t *dev, uint32_t addr)
static void
sst_new_command(sst_t *dev, uint32_t addr, uint8_t val)
{
uint32_t base = 0x00000, size = dev->size;
if (dev->command_state == 5) switch (val) {
case SST_CHIP_ERASE:
memset(dev->array, 0xff, 0x20000);
if (dev->bbp_first_8k & 0x01) {
base += 0x2000;
size -= 0x2000;
}
if (dev->bbp_last_8k & 0x01)
size -= 0x2000;
memset(&(dev->array[base]), 0xff, size);
dev->command_state = 0;
break;
@@ -138,6 +165,10 @@ sst_new_command(sst_t *dev, uint32_t addr, uint8_t val)
dev->command_state = 6;
break;
case W_BOOT_BLOCK_PROT:
dev->command_state = dev->has_bbp ? 8 : 0;
break;
case SST_CLEAR_ID_MODE:
dev->id_mode = 0;
dev->command_state = 0;
@@ -160,6 +191,11 @@ sst_page_write(void *priv)
dev->page_base = dev->last_addr & dev->page_mask;
for (i = 0; i < 128; i++) {
if (dev->page_dirty[i]) {
if (((dev->page_base + i) < 0x2000) && (dev->bbp_first_8k & 0x01))
continue;
else if (((dev->page_base + i) >= (dev->size - 0x2000)) && (dev->bbp_last_8k & 0x01))
continue;
dev->array[dev->page_base + i] = dev->page_buffer[i];
dev->dirty |= 1;
}
@@ -175,12 +211,24 @@ static uint8_t
sst_read_id(uint32_t addr, void *p)
{
sst_t *dev = (sst_t *) p;
uint8_t ret = 0xff;
uint8_t ret = 0x00;
if ((addr & 0xffff) == 0)
ret = SST_ID_MANUFACTURER; /* SST */
ret = dev->manufacturer;
else if ((addr & 0xffff) == 1)
ret = dev->id;
#ifdef UNKNOWN_FLASH
else if ((addr & 0xffff) == 0x100)
ret = 0x1c;
else if ((addr & 0xffff) == 0x101)
ret = 0x92;
#endif
else if (dev->has_bbp) {
if (addr == 0x00002)
ret = dev->bbp_first_8k;
else if (addr == 0x3fff2)
ret = dev->bbp_last_8k;
}
return ret;
}
@@ -249,8 +297,9 @@ sst_write(uint32_t addr, uint8_t val, void *p)
case 6:
/* Page Load Cycle (29) / Data Write Cycle (39SF) */
if (dev->is_39) {
dev->array[addr & dev->mask] = val;
dev->command_state = 0;
dev->array[addr & dev->mask] = val;
dev->dirty = 1;
} else {
dev->command_state++;
@@ -261,6 +310,13 @@ sst_write(uint32_t addr, uint8_t val, void *p)
if (!dev->is_39)
sst_buf_write(dev, addr, val);
break;
case 8:
if ((addr == 0x00000) && (val == 0x00))
dev->bbp_first_8k = 0xff;
else if ((addr == 0x3ffff) && (val == 0xff))
dev->bbp_last_8k = 0xff;
dev->command_state = 0;
break;
}
}
@@ -367,20 +423,19 @@ sst_init(const device_t *info)
dev->array = (uint8_t *) malloc(biosmask + 1);
memset(dev->array, 0xff, biosmask + 1);
dev->id = info->local;
dev->is_39 = (dev->id >= SST_ID_SST39SF512);
dev->manufacturer = info->local & 0xff;
dev->id = (info->local >> 8) & 0xff;
dev->has_bbp = (dev->manufacturer == WINBOND) && ((info->local & 0xff00) >= W29C020);
dev->is_39 = (dev->manufacturer == SST) && ((info->local & 0xff00) >= SST39SF512);
if (dev->id == SST_ID_SST39SF512)
dev->size = info->local & 0xffff0000;
if ((dev->size == 0x20000) && (strstr(machine_get_internal_name_ex(machine), "xi8088")) && !xi8088_bios_128kb())
dev->size = 0x10000;
else if ((dev->id == SST_ID_SST29EE020) || (dev->id == SST_ID_SST29LE_VE020) || (dev->id == SST_ID_SST39SF020))
dev->size = 0x40000;
else if (dev->id == SST_ID_SST39SF040)
dev->size = 0x80000;
else
dev->size = ((dev->id == SST_ID_SST39SF010) && (strstr(machine_get_internal_name_ex(machine), "xi8088")) && !xi8088_bios_128kb()) ? 0x10000 : 0x20000;
dev->mask = dev->size - 1;
dev->page_mask = dev->mask & 0xffffff80; /* Filter out A0-A6. */
dev->sdp = 1;
dev->bbp_first_8k = dev->bbp_last_8k = 0xfe;
sst_add_mappings(dev);
@@ -422,7 +477,7 @@ const device_t sst_flash_29ee010_device =
{
"SST 29EE010 Flash BIOS",
0,
SST_ID_SST29EE010,
SST | SST29EE010 | SIZE_1M,
sst_init,
sst_close,
NULL,
@@ -434,7 +489,19 @@ const device_t sst_flash_29ee020_device =
{
"SST 29EE020 Flash BIOS",
0,
SST_ID_SST29EE020,
SST | SST29EE020 | SIZE_2M,
sst_init,
sst_close,
NULL,
{ NULL }, NULL, NULL, NULL
};
const device_t winbond_flash_w29c020_device =
{
"Winbond W29C020 Flash BIOS",
0,
WINBOND | W29C020 | SIZE_2M,
sst_init,
sst_close,
NULL,
@@ -446,7 +513,7 @@ const device_t sst_flash_39sf010_device =
{
"SST 39SF010 Flash BIOS",
0,
SST_ID_SST39SF010,
SST | SST39SF010 | SIZE_1M,
sst_init,
sst_close,
NULL,
@@ -458,7 +525,7 @@ const device_t sst_flash_39sf020_device =
{
"SST 39SF020 Flash BIOS",
0,
SST_ID_SST39SF020,
SST | SST39SF020 | SIZE_2M,
sst_init,
sst_close,
NULL,
@@ -469,7 +536,7 @@ const device_t sst_flash_39sf040_device =
{
"SST 39SF040 Flash BIOS",
0,
SST_ID_SST39SF040,
SST | SST39SF040 | SIZE_4M,
sst_init,
sst_close,
NULL,